Athens Metro Line 3
E952765
Athens Metro Line 3 is a major rapid transit line of the Athens Metro system that connects central Athens with key suburbs and the Athens International Airport.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Athens Metro Line 3 canonical | 9 |
| Line 3 (Athens Metro) | 4 |
| Athens International Airport (via Line 3) | 1 |
| Athens Metro Line 3 (Evangelismos station nearby) | 1 |
| Athens–Airport line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11768497 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Athens Metro Line 3 Context triple: [Cholargos, publicTransport, Athens Metro Line 3]
-
A.
Athens Metro Line 1
Athens Metro Line 1 is the oldest line of the Athens Metro system, running mostly overground and connecting the northern suburbs with the city center and the port of Piraeus.
-
B.
Athens Metro
The Athens Metro is the rapid transit system serving Greece's capital, combining modern underground lines with some of the world’s oldest continuously operating urban rail infrastructure.
-
C.
Athens Suburban Railway
The Athens Suburban Railway is a regional rail network serving the greater Athens metropolitan area, connecting the city with its international airport and surrounding regions.
-
D.
Athens tram network
The Athens tram network is a modern light rail system in Athens, Greece, connecting key coastal and central districts and serving as an important component of the city's public transportation.
-
E.
Patras–Athens railway line
The Patras–Athens railway line is a major rail corridor in Greece connecting the port city of Patras in the Peloponnese with the capital city of Athens, serving as a key route for both passenger and freight transport.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Athens Metro Line 3 Target entity description: Athens Metro Line 3 is a major rapid transit line of the Athens Metro system that connects central Athens with key suburbs and the Athens International Airport.
-
A.
Athens Metro Line 1
Athens Metro Line 1 is the oldest line of the Athens Metro system, running mostly overground and connecting the northern suburbs with the city center and the port of Piraeus.
-
B.
Athens Metro
The Athens Metro is the rapid transit system serving Greece's capital, combining modern underground lines with some of the world’s oldest continuously operating urban rail infrastructure.
-
C.
Athens Suburban Railway
The Athens Suburban Railway is a regional rail network serving the greater Athens metropolitan area, connecting the city with its international airport and surrounding regions.
-
D.
Athens tram network
The Athens tram network is a modern light rail system in Athens, Greece, connecting key coastal and central districts and serving as an important component of the city's public transportation.
-
E.
Patras–Athens railway line
The Patras–Athens railway line is a major rail corridor in Greece connecting the port city of Patras in the Peloponnese with the capital city of Athens, serving as a key route for both passenger and freight transport.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
rapid transit line ⓘ |
| airportSectionOpened | 2004 ⓘ |
| color | blue ⓘ |
| connectsTo |
Athens International Airport
NERFINISHED
ⓘ
Athens city centre NERFINISHED ⓘ Piraeus NERFINISHED ⓘ |
| electrification | 750 V DC third rail ⓘ |
| extensionOpened |
2004
ⓘ
2020 ⓘ 2022 ⓘ |
| fareSystem | Athens integrated public transport tariff ⓘ |
| hasCharacter |
at-grade
ⓘ
suburban railway alignment on airport branch ⓘ underground ⓘ |
| hasInterchangeStation |
Monastiraki station
NERFINISHED
ⓘ
Syntagma station NERFINISHED ⓘ |
| hasInterchangeWith |
Athens Metro Line 1
NERFINISHED
ⓘ
Athens Metro Line 2 NERFINISHED ⓘ |
| hasStation |
Airport station
ⓘ
Doukissis Plakentias station NERFINISHED ⓘ Egaleo station NERFINISHED ⓘ Ethniki Amyna station NERFINISHED ⓘ Holargos station NERFINISHED ⓘ Kerameikos station NERFINISHED ⓘ Monastiraki station NERFINISHED ⓘ Nikaia station NERFINISHED ⓘ Nomismatokopio station NERFINISHED ⓘ Piraeus station NERFINISHED ⓘ Syntagma station NERFINISHED ⓘ |
| lineNumber | 3 ⓘ |
| locatedIn |
Athens
ⓘ
Greece ⓘ |
| opened | 2000 ⓘ |
| operator | STASY S.A. NERFINISHED ⓘ |
| owner | Hellenic Republic NERFINISHED ⓘ |
| partOf | Athens Metro NERFINISHED ⓘ |
| serviceType |
airport rail link
ⓘ
urban rail ⓘ |
| system | Athens Metro NERFINISHED ⓘ |
| terminusAt |
Athens International Airport station
NERFINISHED
ⓘ
Dimotiko Theatro station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| usesRollingStock |
Athens Metro 3rd generation trains
NERFINISHED
ⓘ
dual-voltage trains for airport section ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Athens Metro Line 3 Description of subject: Athens Metro Line 3 is a major rapid transit line of the Athens Metro system that connects central Athens with key suburbs and the Athens International Airport.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Line 1 (Athens Metro)
this entity surface form:
Line 3 (Athens Metro)
subject surface form:
Line 2 (Athens Metro)
this entity surface form:
Line 3 (Athens Metro)
this entity surface form:
Line 3 (Athens Metro)
this entity surface form:
Athens International Airport (via Line 3)
this entity surface form:
Athens–Airport line
subject surface form:
Kolonaki
this entity surface form:
Athens Metro Line 3 (Evangelismos station nearby)
subject surface form:
Ambelokipi
this entity surface form:
Line 3 (Athens Metro)